Datasheet > RT6238BLGQUF

RT6238BLGQUF

更新时间： 2022-09-29 19:49:07

品牌	Logo	应用领域
立锜 - RICHTEK		/
页数	文件大小	规格书
23页	489K
描述
IC REG BUCK ADJ 8A SYNC

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RT6238BLGQUF 数据手册

RT6238A/B

Functional Pin Description

Pin No.

Pin Name

Pin Function

AGND

Analog GND.

Feedback Voltage Input. It is used to regulate the output of the converter to a set

value via an external resistive voltage divider. The feedback reference voltage is

0.7V typically.

Internal Regulator Output. Connect a 1F capacitor to GND to stabilize output

voltage.

PVCC

PGOOD

Power Good Indicator Open-Drain Output.

Bootstrap Supply for High-Side Gate Driver. This capacitor is needed to drive the

power switch's gate above the supply voltage. It is connected between the SW and

BOOT pins to form a floating supply across the power switch driver. A 0.1F

capacitor is recommended for use.

BOOT

VIN

Switch Node. Connect this pin to an external L-C filter.

Power Input. The input voltage range is from 4.5V to 18V. Must bypass with a

suitably large (10F x 2) ceramic capacitor.

7, 8

9, 10, 11, 12 GND

Ground.

Enable Control Input. A logic-high enables the converter; a logic-low forces the IC

into shutdown mode reducing the supply current to less than 10A. The EN pin

can be connected to VIN with a 100k pull-up resistor for automatic start-up. The

pull-up resistance should not small than 60k to prevent EN pin voltage over than

absolute maximum rating.

Soft-Start Time Setting. An external capacitor should be connected between this

pin and GND.

Function Block Diagram

PVCC

BOOT

PVCC

Reg

Min.

Off

PVCC

VIN

VIBIAS

REF

UGATE

LGATE

Control

Driver

UV & OV

PVCC

GND

GND SW

Ripple

Gen.

Comparator

PGOOD

6µA

0.9 V

REF

0.4

On-Time SW

Comparator



1.2/1.01

is a registered trademark of Richtek Technology Corporation.

DS6238A/B-08 July 2017

www.richtek.com

1 234 5 6 7...23

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